Double-cylinder pump



Jan. 3, 1928.

J. H. CAMPBELL DOUBLE CYLINDER PUMP Filed May 13, 1927 61m: "an IPatented Jan. 3, 1928.

' UNITED STATES JAMES H. CAMPBELL, 0 0110, MICHIGAN.

DOUBLE-CYLINDER PUMP.

Application filed May 13, 1927. Serial No. 191,203.

The present invention is directed to improvements in double cylinderpumps.

The primary object of the invention is to provide a device of thischaracter so constructed that the working pistons can be easilyreciprocated in order to pump a continuous volume of water. 7

Another object of the invention is to provide a pump of this kind soconstructed that the parts thereof can be conveniently assembled, andwhen assembled, the two pump pistons can be operated with comparativeease.

WVith these and other objects in view, this invention resides in thenovel features of construction, formation, combination and arrangementof parts hereinafter more fully described, claimed and illustrated inthe accompanying drawing, in which,-

Figure 1 is a side elevation of the pump.

Figure 2 is a detail vertical sectional View through one of the pumpcylinders and pistons.

Referring to the'drawing, 1 designates a curb for the well 2, said curbhaving supported thereby pipes 33, the lower ends of which are coupledby stuffing boxes 3 with the unions t-t which support the pipe sections55, the inner ends of said sections being in communication with a casing6.

Having its lower end connected to the easing 6 is a discharge pipe 7which extends through the curb 1 and is provided with a discharge spout8.

Connected with the unions 4c4 are cylinders 99 provided with heads 10and 11, the heads 11 having check valves 12 therein. The heads 11 are incommunication with the inlet coupling 13 through pipes 14.-14, saidcoupling being submerged in the water of the well.

Supported by the pipes 33 is a bar 15 which has supported centrallythereon a bracket 16 and to the upper end of which is pivotallyconnected a beam 17, the purpose of which will be later explained.

Mounted upon the upper ends of the bar 15 are heads 18 and restingthereon are standards 19, the upper ends of which are provided withguides 20, said guides and 1 heads being provided, respectively, withalined bores 21 and 22, in which slide the piston rods 2323, there beinglinks 2424= pivotally connecting the rods with the ends of the beam 17.

The rods 23 extend downwardly through i the handle for adjusting thepivotal connection of the link when it is desired to change the strokeof the piston rods 23.

The handle 28 is shown upon the left hand side of the pump, but ifdesired itcan be placed upon the right hand side, and in fact, should itbe deemed advisable, a handle could be applied to the opposite side ofthe pump. I

Upon rocking the handle 28, the connected piston rod 23 will bereciprocated and through the medium of the beam '17 reciprocatorymovement will be transmitted to the other rod, thus reciprocating thepiston heads 25 in their respective cylinders. Owing to the presence ofthe beam 17 the piston rods will move in opposite directions in order topump the water in a continuous volume.

As the piston heads reciprocate within their respective cylinders, waterwill be drawn alternately'therein through the inlet connection 13, pipesections Hand upon the up stroke of each piston head water will beforced through the unions 4, pipe sections 5 and into the casing 6 andfrom thence into the pipes 7. Thus a continuous volume of water may bepumped upon rocking the handle 28.

A valve rod 30 extends through the pipes 7 and is operable to drain thepipes 7 and casing 6 to prevent freezing of water therein.

Having thus described the invention, I claim.

A pump comprising a pair ofcylinders,

piston heads reciprocable therein, pipes having their lower endsconnected with the upper ends of the cylinders, a casing, pipe ton rod,links pivotally connecting the beam and both piston rods for rocking thebeam When the handle is actuated to reciprocate 10 the piston rods, andthus the piston heads in opposite directions.

In testimony whereof I affix my signature.

JAMES H. CAMPBELL. 1,. 8.]

